1.25x manifier with correction lens

[nobbylon]

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Does anyone know the answer please. I use a +1.5 correction lens on my M9 and without my 1.5 glasses this is fine. When I fit the 1.25x with this lens it is out of focus. Is this normal? looks like I need a plus 3 lens to get it to focus! thanks john

[a.noctilux]

John,

Have you unscrew the correction lens from the M9 eyepiece then screw it on back of the x1.25 ?

 

If so, it's not normal.

 

Regards,

 

Arnaud

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[Luke_Miller]

It's normal for me.  I need a +0.5 correction eyepiece on the body.  When I use my 1.25x magnifier the +0.5 (added to the magnifier) is no longer enough.  The +1.0 is a bit too strong - a +0.75 would be perfect, but doesn't exist.  With my 1.4x magnifier a +1.5 works well.  I don't have a good explanation for why this is the case.  It is like the magnifier not only makes the viewfinder image larger, but closer as well - requiring more of a close focus correction in my case.  Folks who have eyes that have not lost the ability to focus at short distance do not seem to experience this.

[nobbylon]

thank you both. 

Luke, thank you for the explanation. I thought I was going mad! I'll hunt down a plus 2 as I want to leave the magnifier on as a permanent solution. I mainly use a 35 and I can just about see the frame lines.

[tobey bilek]

thank you both. 

Luke, thank you for the explanation. I thought I was going mad! I'll hunt down a plus 2 as I want to leave the magnifier on as a permanent solution. I mainly use a 35 and I can just about see the frame lines.

 

 

1.25 is made for 50/75 mm lens.  35 mm frame line will become hard to see with it.  The viewfinder image is magnified so objects near the edges will fall out of the line of sight.

[nobbylon]

1.25 is made for 50/75 mm lens.  35 mm frame line will become hard to see with it.  The viewfinder image is magnified so objects near the edges will fall out of the line of sight.

 

as I said, frame lines just about visible! I'm mainly interested in a magnified rf patch to help with my focus.